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https://www.readbyqxmd.com/read/29773456/custom-air-puff-derived-biomechanical-variables-in-a-refractive-surgery-screening-setting-study-from-2-centers
#1
Vinicius S De Stefano, Ibrahim Seven, J Bradley Randleman, William J Dupps
PURPOSE: To assess the ability of air puff-derived biomechanical variables to predict surgeon-perceived candidacy for laser in situ keratomileusis (LASIK). SETTING: Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, and Emory Eye Institute, Emory University, Atlanta, Georgia, USA. DESIGN: Retrospective case series. METHODS: Data were collected from refractive surgery screening examinations by 2 surgeons at 2 centers...
May 15, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29772222/outcomes-of-laser-in-situ-keratomileusis-and-photorefractive-keratectomy-in-patients-taking-isotretinoin
#2
Julio Ortega-Usobiaga, Fernando Llovet-Osuna, Mohammad Reza Djodeyre, Rafael Bilbao-Calabuig, Félix González-López, Andrea Llovet-Rausell, Vasyl Druchkiv
PURPOSE: To determine the functional outcomes of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) in patients taking isotretinoin, which is contraindicated for these procedures. DESIGN: Multicentre, retrospective, interventional case series METHODS: All patients taking isotretinoin who underwent LASIK or PRK from January 2003 to September 2017 were included (group 1). Patients were compared with those undergoing LASIK or PRK who had taken isotretinoin previously but not in the previous 6 months (group 2)...
May 14, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29771882/-morphological-changes-of-cornea-in-children-with-hyperopia-in-the-immediate-and-remote-postoperative-period-after-laser-keratomieleusis-according-to-confocal-microscopy-data
#3
I L Kulikova, N P Pashtaev, O V Shlenskaya
Studying morphological changes of cornea in the remote postoperative period is becoming increasingly relevant with refractive surgeries being adapted for children. PURPOSE: comparative analysis of keratocyte density and hystomorphologic changes of cornea after laser in situ keratomieleusis (LASIK) and femtosecond laser-assisted LASIK (FS-LASIK) in children with hyperopia. MATERIAL AND METHODS: 109 patients aged 6-17 years in 2 groups were examined with 'Confoscan-4' confocal microscope...
2018: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29765198/management-of-post-lasik-dry-eye-a-multicenter-randomized-comparison-of-a-new-multi-ingredient-artificial-tear-to-carboxymethylcellulose
#4
Avi Wallerstein, W Bruce Jackson, Jeffrey Chambers, Amir M Moezzi, Hugh Lin, Peter A Simmons
Purpose: To compare the efficacy and safety of a preservative-free, multi-ingredient formulation of carboxymethylcellulose 0.5%, hyaluronic acid 0.1%, and organic osmolytes (CMC-HA), to preservative-free carboxymethylcellulose 0.5% (CMC) in the management of postoperative signs and symptoms of dry eye following laser-assisted in situ keratomileusis (LASIK). Methods: This was a double-masked, randomized, parallel-group study conducted in 14 clinical centers in Canada and Australia...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29754993/topography-guided-lasik-versus-small-incision-lenticule-extraction-long-term-refractive-and-quality-of-vision-outcomes
#5
Anastasios John Kanellopoulos
No abstract text is available yet for this article.
May 10, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29752594/late-onset-traumatic-dislocation-of-laser-in-situ-keratomileusis-corneal-flaps-a-case-series-with-many-clinical-lessons
#6
Darren Shu Jeng Ting, Jean-Pierre Danjoux
PURPOSE: To report three cases of late-onset (7-14 years postoperative) traumatic dislocation of laser in situ keratomileusis (LASIK) flaps with epithelial ingrowth that all had delayed surgical intervention. METHODS: A retrospective, interventional case series of three patients who underwent flap repositioning and mechanical debridement of epithelial ingrowth, all after an initial delayed diagnosis/treatment of dislocated LASIK flap. RESULTS: Visual improvement was noted in all three cases following LASIK flap repositioning and debridement of epithelial ingrowth; patient 1 improved from 20/800 corrected-distance-visual-acuity (CDVA) to 20/20 uncorrected-distance-visual-acuity (UDVA) postoperative (14 years post-LASIK, 5-week interval between injury and surgery), patient 2 improved from 20/50 CDVA to 20/20 CDVA (10 years post-LASIK, 4-month interval between injury and surgery) and patient 3 improved from 20/80 CDVA to 20/60 CDVA (7 years post-LASIK, 14-month interval between injury and surgery)...
May 12, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29738592/treatment-of-corneal-ectasia-by-implantation-of-an-allogenic-corneal-lenticule
#7
Meiyan Li, Feng Zhao, Meng Li, Michael C Knorz, Xingtao Zhou
PURPOSE: To describe a case in which post-LASIK corneal ectasia was treated using an allogeneic lenticule implanted into the recipient eye. METHODS: A 29-year-old man presented with bilateral ectasia 10 years after LASIK. Manifest refraction was -1.50 -3.25 × 15° in the right eye and -13.50 -6.00 × 10° in the left eye. Because of contact lens intolerance in the left eye, the authors decided to implant an allogenic corneal lenticule, created by small incision lenticule extraction with the VisuMax laser (Carl Zeiss Meditec, Jena, Germany) in a donor eye with a refraction of +5...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738587/risk-factors-for-re-treatment-following-hyperopic-lasik
#8
Michael Mimouni, Victor Flores, Tzahi Sela, Gur Munzer, Igor Kaiserman
PURPOSE: To determine the risk factors for re-treatment following LASIK in hyperopic eyes. METHODS: In this retrospective study, consecutive hyperopic eyes underwent LASIK at the Care Vision Laser Centers, Tel-Aviv, Israel, between January 2000 and October 2014. Patients were divided into two groups according to whether or not they underwent additional refractive surgery (re-treatment). Logistic regression was performed to determine predictors of re-treatment. RESULTS: Overall, 1,776 eyes of 888 patients were included, of which 82 (4...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738586/retrospective-comparison-of-visual-outcomes-after-kamra-corneal-inlay-implantation-with-simultaneous-prk-or-lasik
#9
Majid Moshirfar, Andrew E Bean, Julio C Albarracin, Ronald L Rebenitsch, Ryan T Wallace, Orry C Birdsong
PURPOSE: To report a retrospective study of simultaneous LASIK versus photorefractive keratectomy (PRK) with accompanying small-aperture cornea inlay implantation (KAMRA; AcuFocus, Inc., Irvine, CA) in treating presbyopia. METHODS: Simultaneous LASIK/inlay and simultaneous PRK/inlay was performed on 79 and 47 patients, respectively. Follow-up examinations were conducted at 1, 3, and 6 months postoperatively. The main outcome measures were safety, efficacy, predictability, and stability with primary emphasis on monocular uncorrected near visual acuity (UNVA)...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738585/circle-enhancement-after-myopic-smile
#10
Jakob Siedlecki, Nikolaus Luft, Wolfgang J Mayer, Martin Siedlecki, Daniel Kook, Bertram Meyer, Martin Bechmann, Rainer Wiltfang, Siegfried G Priglinger, Martin Dirisamer
PURPOSE: To report the outcomes of enhancement after small incision lenticule extraction (SMILE) using the VisuMax CIRCLE option (Carl Zeiss Meditec AG, Jena, Germany), which converts the SMILE cap into a femtosecond LASIK flap for secondary excimer laser application. METHODS: Of 2,065 SMILE procedures, 22 eyes (1.1%) re-treated with CIRCLE with a follow-up of 3 months were included in the analysis. SMILE was performed in the usual manner. For re-treatment, the CIRCLE procedure was performed with pattern D flap creation on the VisuMax system and subsequent excimer laser ablation with a Zeiss MEL 90 laser (Carl Zeiss Meditec) with plano target in all cases...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29728896/nd-yag-laser-for-epithelial-ingrowth-after-laser-in-situ-keratomileusis
#11
Osama Ali Mohammed, Amr Mounir, Amin Aboali Hassan, Alahmady Hamad Alsmman, Engy Mohamed Mostafa
PURPOSE: To evaluate the efficacy of neodymium:yttrium-aluminum-garnet (Nd:YAG) laser for treatment of epithelial ingrowth after laser in situ keratomileusis (LASIK). PATIENTS AND METHODS: Fifty-eight patients with epithelial ingrowth presented to Sohag refractive center, Sohag, Egypt, between January 2015 and March 2017. Only 41 patients (18 females and 23 males, mean age: 33.4 years) involving 41 eyes were indicated for treatment by Nd:YAG laser as the rest of the eyes were only under observation...
May 4, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29718869/changes-of-corneal-high-order-aberrations-after-femtosecond-laser-assisted-in-situ-keratomileusis
#12
Jing Wang, Yanlin Ren, Kun Liang, Zhengxuan Jiang, Liming Tao
BACKGROUND: Femtosecond laser-assisted in situ keratomileusis (FS-LASIK) has gained widespread popularity as a safe, effective and predictable treatment for correcting myopia and myopic astigmatism.However, complications such as biomechanical changes, structural weakness, dry eye and induction of high-order aberrations (HOAs) have been associated with FS laser excision. The induction of HOAs has been reported to reduce quality of vision, leading to increased glare, halos, starburst and deterioration of contrast function corneal HOAs play a significant role in whole-eye aberration...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29708931/recent-advances-in-wavefront-guided-lasik
#13
Edward Manche, Joshua Roe
PURPOSE OF REVIEW: Laser vision correction remains an active area of research, and there have been many recent advances in the field. The purpose of this review is to provide an update on the recent advances for one of the most common methods of laser vision correction, wavefront-guided laser in-situ keratomileusis (LASIK). RECENT FINDINGS: Recent technological advancements in wavefront aberrometry are largely responsible for the improved visual outcomes that have been recently reported...
April 27, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29704827/development-and-clinical-verification-of-numerical-simulation-for-laser-in-situ-keratomileusis
#14
FangJun Bao, JunJie Wang, Si Cao, Na Liao, Bao Shu, YiPing Zhao, YiYu Li, XiaoBo Zheng, JinHai Huang, ShiHao Chen, QinMei Wang, Ahmed Elsheikh
To develop and validate numerical models of the laser in situ keratomileusis (LASIK) procedure through considering its effect on corneal biomechanical behavior. 3D finite element models of the human eye were developed to simulate LASIK. The models' predictions of post-operative corneal elevation, corneal refractive power with vector decomposition (M-c-pos , J0-c-pos , J45-c-pos ) and refractive error correction (M-rec , J0-rec , J45-rec ) were compared against clinical data obtained for 28 eyes of 28 patients...
July 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29703284/evaluation-of-a-multifunctional-femtosecond-laser-for-the-creation-of-laser-in-situ-keratomileusis-flaps
#15
Stephen Slade, Teresa Ignacio, Scott Spector
PURPOSE: To characterize the performance of a multifunctional femtosecond laser system (Lensx) for the creation of laser in situ keratomileusis (LASIK) flaps. SETTING: Two surgical sites in the United States. DESIGN: Prospective case series pilot study. METHODS: Patients with myopia or hyperopia who were eligible for femtosecond laser-initiated LASIK surgery with corrected distance visual acuities (CDVA) correctable to at least 20/25 were enrolled...
March 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29700964/refractive-regression-after-laser-in-situ-keratomileusis
#16
REVIEW
Mabel K Yan, John Sm Chang, Tommy Cy Chan
Uncorrected refractive errors are a leading cause of visual impairment across the world. In today's society, laser in-situ keratomileusis (LASIK) has become the most commonly performed surgical procedure to correct refractive errors. However, regression of the initially-achieved refractive correction has been a widely-observed phenomenon following LASIK since its inception more than two decades ago. Despite technological advances in laser refractive surgery and various proposed management strategies, post-LASIK regression is still frequently observed and has significant implications for the long-term visual performance and quality of life of patients...
April 26, 2018: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/29700642/evaluation-of-corneal-biomechanics-in-patients-with-keratectasia-following-lasik-using-dynamic-scheimpflug-analyzer
#17
Ryotaro Ueki, Naoyuki Maeda, Mutsumi Fuchihata, Tomoko Asai, Shizuka Koh, Hisataka Fujimoto, Masafumi Uematsu, Kohji Nishida
PURPOSE: To investigate the corneal biomechanics in eyes with keratectasia following LASIK using a dynamic Scheimpflug analyzer. DESIGN: Case-Control study. METHOD: The subjects in the study included 12 eyes with keratectasia after LASIK (KE), 24 eyes with keratoconus (KC), 17 eyes without keratectasia after LASIK (LASIK), and 34 eyes with normal corneas (Normal). Corneal biomechanics of the four groups were evaluated using a dynamic Scheimpflug analyzer...
April 26, 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29685776/clinical-evaluation-of-a-new-correction-algorithm-for-dynamic-scheimpflug-analyzer-tonometry-before-and-after-laser-in-situ-keratomileusis-and-small-incision-lenticule-extraction
#18
Kai-Jung Chen, Akram Joda, Riccardo Vinciguerra, Ashkan Eliasy, Shervin Mir Mohi Sefat, Daniel Kook, Brendan Geraghty, Cynthia J Roberts, Ahmed Elsheikh
PURPOSE: To compare a biomechanically corrected intraocular pressure (bIOP) algorithm provided by the dynamic Scheimpflug analyzer (Corvis ST) with Goldmann applanation tonometry IOP (Goldmann IOP) and standard dynamic Scheimpflug analyzer IOP measurements before and after laser in situ keratomileusis (LASIK) and refractive lenticule extraction small-incision lenticule extraction (SMILE) surgeries. SETTING: Smile Eye Clinic, Munich, Germany, and University of Liverpool, Liverpool, United Kingdom...
April 20, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29675388/consistent-comparison-of-angle-kappa-adjustment-between-oculyzer-and-topolyzer-vario-topography-guided-lasik-for-myopia-by-ex500-excimer-laser
#19
Ming-Shen Sun, Li Zhang, Ning Guo, Yan-Zheng Song, Feng-Ju Zhang
AIM: To evaluate and compare the uniformity of angle Kappa adjustment between Oculyzer and Topolyzer Vario topography guided ablation of laser in situ keratomileusis (LASIK) by EX500 excimer laser for myopia. METHODS: Totally 145 cases (290 consecutive eyes )with myopia received LASIK with a target of emmetropia. The ablation for 86 cases (172 eyes) was guided manually based on Oculyzer topography (study group), while the ablation for 59 cases (118 eyes) was guided automatically by Topolyzer Vario topography (control group)...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675387/comparison-of-optical-quality-after-implantable-collamer-lens-implantation-and-wavefront-guided-laser-in-situ-keratomileusis
#20
Hong-Ting Liu, Zhou Zhou, Wu-Qiang Luo, Wen-Jing He, Owhofasa Agbedia, Jiang-Xia Wang, Jian-Zhong Huang, Xin Gao, Min Kong, Min Li, Li Li
AIM: To compare the optical quality after implantation of implantable collamer lens (ICL) and wavefront-guided laser in situ keratomileusis (WG-LASIK). METHODS: The study included 40 eyes of 22 patients with myopia who accepted ICL implantation and 40 eyes of 20 patients with myopia who received WG-LASIK. Before surgery and three months after surgery, the objective scattering index (OSI), the values of modulation transfer function (MTF) cutoff frequency, Strehl ratio, and the Optical Quality Analysis System (OQAS) values (OVs) were accessed...
2018: International Journal of Ophthalmology
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